# After saving the segmentation re-editing the data

**URL:** <https://discourse.slicer.org/t/after-saving-the-segmentation-re-editing-the-data/3562>\
**Category:** Support\
**Tags:** segmentation\
**Created:** [July 23, 2018, 1:48pm UTC](https://discourse.slicer.org/t/after-saving-the-segmentation-re-editing-the-data/3562 "2018-07-23T13:48:10Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![aksu](https://avatars.discourse-cdn.com/v4/letter/a/3ab097/32.png) [@aksu](https://discourse.slicer.org/u/aksu)\
**Post date:** [July 23, 2018, 1:48pm UTC](https://discourse.slicer.org/t/after-saving-the-segmentation-re-editing-the-data/3562/1 "2018-07-23T13:48:10Z")

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Operating system:MacOS 10.13.6  
Slicer version:4.8.1  
After saving the segmentation, I couldn’t re-edit or add another segmentation to data.  
How could I fix that problem?  
Thank you

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**Author:** ![cpinter](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/cpinter/32/7995_2.png) [@cpinter](https://discourse.slicer.org/u/cpinter)\
**Post date:** [July 23, 2018, 2:11pm UTC](https://discourse.slicer.org/t/after-saving-the-segmentation-re-editing-the-data/3562/2 "2018-07-23T14:11:57Z")

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First of all, please use a recent nightly, because a lot of development has happened since the 2017 October release of 4.8.1, including around segmentations.

If you save a segmentation to nrrd.seg, and load it back as a segmentation, then you should be able to edit it, as long as you have a CT/MRI/etc volume in the scene as well that you select as master in Segment Editor.

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**Author:** ![caolong](https://avatars.discourse-cdn.com/v4/letter/c/3e96dc/32.png) [@caolong](https://discourse.slicer.org/u/caolong)\
**Post date:** [July 26, 2018, 1:45am UTC](https://discourse.slicer.org/t/after-saving-the-segmentation-re-editing-the-data/3562/3 "2018-07-26T01:45:14Z")

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In my opinion ,you should save the file" segmentation seg.nrrd" if you use segment editor.When you want to re-edit next time ,you can drag three files including CT or MRI nrrd file ,segmentation-label nrrd file and the segmentation seg.nrrd file to the new open slicer,then you can re-editor by segment editor.  
 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/c/6/c69f9b15a7af18be5dab786697b2a0c150020ee9.jpeg)

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [July 26, 2018, 3:53am UTC](https://discourse.slicer.org/t/after-saving-the-segmentation-re-editing-the-data/3562/4 "2018-07-26T03:53:18Z")

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If you leave the segmentation node’s master representation at the default _binary labelmap_ then it is enough to save the scalar volume (CT, MRI, … .nrrd file) and segmentation node (… .seg.nrrd file).